NDLI: New approaches for designing microstrip filters utilizing mixed dielectrics

Content Provider	IEEE Xplore Digital Library
Author	Semouchkina, E. Baker, A. Semouchkin, G.B. Lanagan, M. Mittra, R.
Copyright Year	1963
Abstract	A strategy is developed for designing capacitively loaded microstrip filters on low-temperature co-fired ceramic (LTCC) substrates with inclusions or superstrate layers of higher permittivity dielectrics. Finite-difference time-domain simulations of the field distribution at resonant frequencies are used to determine the optimal locations and size of capacitive loads. It is demonstrated that strategic capacitive load placement enables altering the center and attenuation pole frequencies, the shape and width of the passband, and input impedance of the filter by modification of selected resonant modes. Capacitive loading with higher permittivity dielectrics is shown to be very efficient in decreasing dimensions of microstrip filters with low-permittivity substrates. The designs of novel compact resonators and filters have been developed and the prototypes fabricated by using LTCC technology. The results of prototype measurements agree with the simulation results, which validates the proposed approach
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	644
Ending Page	652
Page Count	9
File Size	1628803
File Format	PDF
ISSN	00189480
Volume Number	53
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microstrip filters Dielectric substrates Resonator filters Permittivity Ceramics Finite difference methods Time domain analysis Resonant frequency Attenuation Shape resonance Electromagnetic fields finite-difference timedomain (FDTD) methods microstrip filters
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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